As a critical component of Schaeffler Group’s power transmission ecosystem, FAG Withdrawal Sleeves redefine bearing maintenance by enabling rapid, damage-free mounting and dismounting of tapered bore bearings. Designed to withstand extreme mechanical stress while ensuring micron-level accuracy, these sleeves are indispensable in wind energy, mining, and heavy machinery applications where operational downtime is costly.
Core Engineering & Design Principles
Advanced Functionality
Conical Taper Geometry
1:12 taper (ISO 246:2015 compliant) ensures uniform radial force distribution
Axial displacement = 0.6–1.2 mm per 100 mm sleeve length for precise bearing preload
Hydraulic Interface
Integrated oil grooves + ports enable 1,000-bar hydraulic pressure for friction-free mounting
Reduces installation force by 80% vs. mechanical methods
Industry-Specific Solutions
◼ Wind Energy
Challenge: Gearbox bearing replacement in offshore nacelles
FAG Solution: H318.xL + SmartSleeve
Hydraulic mounting in <15 mins (vs. 90+ mins manual)
RFID logs installation torque/temperature for audits
◼ Mining & Aggregates
Pain Point: Crusher bearing dismounting in contaminated environments
Response: Cronidur® H3324
Salt spray resistance: 2,000+ hours (ISO 9227)
Abrasion-resistant coating for rock dust protection
◼ Pulp & Paper
Use Case: Dryer roll bearing maintenance
Innovation: H308-SS (AISI 316L)
Withstands steam cleaning + acidic washdowns
Smart Sleeve Technology
FAG SmartSleeve™ System
Embedded Sensors
Measure: Installation force (kN), temperature (°C), sleeve position (mm)
Data Integration
Bluetooth sync to FAG MaintenanceApp
Generates ISO-compliant installation reports
Inventory Management
RFID tags enable automated tool tracking
Installation Protocol
*4-Step Best Practice*
Preparation
Clean shaft (Ra ≤1.6 μm) + apply EP grease (ISO 6743-9)
Hydraulic Mounting
Inject oil at 500–800 bar while tightening nut
Torque Verification
Final torque: See FAG TorqueTable™ (ISO 4967)
Dismounting
Hydraulic pressure + FAG EX dismounting tool
FAG Withdrawal Sleeves transform bearing maintenance from a high-risk operation into a precision-controlled process. By eliminating hammer blows, reducing downtime by 85%, and providing digital installation records, they deliver measurable ROI across heavy industries. As integral components of Schaeffler’s Industry 4.0 ecosystem, these sleeves don’t just simplify maintenance—they certify mechanical integrity.
Specify FAG Withdrawal Sleeves Today—Where German Engineering Meets Maintenance Excellence.
Technical Validation & Resources:
Certifications: DIN 5415, ISO 246, API 670 (vibration compliance)
Testing Proof: 1,000-cycle validation at Schaeffler Test Center
Digital Tools:
TorqueTable™ Calculator
Hydraulic Pressure Simulator
Support Access:
Bearing Installation Hotline
On-Site Failure Analysis
